WO2022134502A1

WO2022134502A1 - Vehicle remote diagnosis system based on cloud platform

Info

Publication number: WO2022134502A1
Application number: PCT/CN2021/101466
Authority: WO
Inventors: 马超
Original assignee: 上海星融汽车科技有限公司
Priority date: 2020-12-21
Filing date: 2021-06-22
Publication date: 2022-06-30
Also published as: CN112684777A

Abstract

A vehicle remote diagnosis system based on a cloud platform. First internet of vehicles devices (110) connected to vehicle diagnostic ports (2) connect to a diagnostic cloud platform (120) to request remote diagnosis, and multiple diagnostic instruments (3) respectively connect to the diagnostic cloud platform (120) by means of multiple second internet of vehicles devices (130) so as to form a diagnostic resource pool; the first internet of vehicles devices (110) and the second internet of vehicles devices (130) can complete interface mapping by means of the diagnostic cloud platform (120), so as to implement a mirror image and real vehicle environment simulation of a commercial vehicle scene; the diagnostic cloud platform (120) can allocate, according to a remote diagnosis request, a corresponding diagnostic instrument (3) from the diagnostic resource pool for diagnosis; a maintenance party only needs to purchase an internet of vehicles device instead of diagnostic devices of different models or manufacturers, greatly reducing the cost and complexity of carrying out a diagnostics services, while also obtaining a comprehensive diagnostic function.

Description

Vehicle remote diagnosis system based on cloud platform

technical field

The invention belongs to the technical field of vehicle diagnosis, and in particular relates to a vehicle remote diagnosis system based on a cloud platform.

Background technique

The commercial vehicle market has been in a stage of rapid development, and the diagnostic business of the commercial vehicle aftermarket has become more and more important. Therefore, the diagnostic instrument products for the commercial vehicle market have become an important diagnostic tool. At present, the diagnostic instruments on the market usually adopt the local diagnosis method of separating the upper and lower computers or integrating the upper and lower computers. Users (car mechanics) must purchase a physical diagnostic instrument for fault diagnosis and maintenance, and use local diagnostic equipment for commercial vehicle fault diagnosis. As we all know, different diagnostic equipment has different diagnostic focus and product coverage. In the local diagnosis scenario, to complete the complete diagnosis purpose, each repair shop needs to purchase multiple sets of different types of diagnostic instruments and diagnostic equipment, which causes a huge waste of resources and requires extremely high usage costs.

SUMMARY OF THE INVENTION

Based on this, in view of the above technical problems, a cloud platform-based vehicle remote diagnosis system is provided.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

A vehicle remote diagnosis system based on a cloud platform, comprising a first IoV device connected to a vehicle diagnosis port, a diagnosis cloud platform, and a plurality of second IoV devices connected to a plurality of diagnostic instruments respectively, the plurality of second IoV devices. The IoV devices respectively connect the multiple diagnostic instruments to the diagnostic cloud platform to form a diagnostic resource pool;

The first IoV device and the second IoV device have the same structure, and both include a communication interface, a bus circuit with a plurality of bus channels respectively used to transmit corresponding bus data, and used for switching the pins of the communication interface to different ones. The pin switching circuit, processor, network module and display module of the bus channel, the communication interface is connected with the pin switching circuit, the pin switching circuit is connected with the bus circuit, and the processor is connected with the pin switching circuit A circuit, a bus circuit, a network module, and a display module connected to a display device are connected, the communication interface of the first IoV device is connected to a vehicle diagnostic port, and the communication interface of the second IoV device is connected to a corresponding diagnostic instrument, The first IoV device and the second IoV device are respectively connected to the diagnostic cloud platform through their respective network modules.

The present invention requests remote diagnosis by accessing the diagnosis cloud platform through the first car networking device connected to the vehicle diagnosis port, and simultaneously, connecting multiple diagnostic instruments to the diagnosis cloud platform through a plurality of second car networking devices to form a diagnostic resource pool, The first IoV device and the second IoV device can complete the interface mapping through the diagnosis cloud platform to realize the image of the commercial vehicle scene and the simulation of the real vehicle environment. For diagnosis by a diagnostic instrument, the maintenance party does not need to purchase diagnostic equipment of different models or manufacturers, but only needs to purchase IoT equipment, which greatly reduces the cost and complexity of conducting diagnostic services, and can also obtain more comprehensive diagnostic functions.

Description of drawings

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments:

Fig. 1 is the structural representation of the present invention;

2 is a schematic structural diagram of a first vehicle networking device of the present invention;

FIG. 3 is an internal schematic diagram of the Internet of Vehicles device of the present invention.

Detailed ways

As shown in FIG. 1 , an embodiment of the present specification provides a vehicle remote diagnosis system based on a cloud platform, including a first IoV device 110 , a diagnosis cloud platform 120 , and a plurality of second IoV devices 130 .

The first IoV device 110 is connected to the vehicle diagnostic port 2 , the plurality of second IoV devices 130 are respectively connected to the multiple diagnostic instruments 3 , and the multiple second IoV devices 130 respectively connect the multiple diagnostic instruments 3 to the diagnosis cloud platform 120. Form a diagnostic resource pool.

The first IoV device 110 and the second IoV device 130 have the same structure. As shown in FIG. 2 , taking the first IoV device 110 as an example, it includes a communication interface 111 and a plurality of buses for transmitting corresponding bus data respectively. The bus circuit 112 of the channel, the pin switching circuit 113 for switching the pins of the communication interface 111 to different bus channels, the processor (MCU) 114, the network module 115 and the display module 116, the communication interface 111 is connected with the pin switching circuit 113 , the pin switching circuit 113 is connected to the bus circuit 112, and the processor 114 is connected to the pin switching circuit 113, the bus circuit 112, the network module 115 and the display module 116 connected to the display device.

The communication interface 111 of the first IoV device 110 is connected to the vehicle diagnostic port 2, the communication interface of the second IoV device 130 is connected to the corresponding diagnostic instrument 3, and the first IoV device 110 and the second IoV device 130 are connected through their respective The network module is connected with the diagnosis cloud platform 120.

The first IoV device 110 and the second IoV device 130 can complete the interface mapping through the diagnosis cloud platform 120 to realize the image of the commercial vehicle scene and the simulation of the real vehicle environment. Allocate the corresponding diagnostic instrument to perform diagnosis.

Specifically, the first IoV device 110 is configured as:

1. Determine the pin configuration of vehicle diagnostic port 2, and establish communication with the vehicle through this pin configuration. The pin switching circuit 113 is controlled by the processor, so that each pin of the communication interface 111 is switched to each bus channel in turn, and the configuration of each pin of the vehicle diagnostic port 2 is determined. The specific process is as follows:

A. The processor 114 controls the pin switching circuit 113 to select one pin of the communication interface 111 in sequence.

B. Switch the current pin to each bus channel in turn, determine the pin configuration information of the vehicle diagnostic port 2 corresponding to the current pin, keep the connection between the current pin and the current bus channel and the baud rate, and return to the previous step to select the communication interface 2's next pin.

The pin configuration includes pin-to-vehicle bus correspondence and baud rate.

Among them, the configuration information of each pin of the vehicle diagnostic port 2 can be determined by monitoring the query or waiting for a response. Inquiry waiting for response refers to traversing all possible pin configuration methods in turn, sending inquiries at different baud rates, and then analyzing and judging according to the returned responses. These two methods are commonly used methods and will not be repeated here.

2. Send the remote diagnosis request to the diagnosis cloud platform 120, and the remote diagnosis request contains vehicle information.

3. Send the pin configuration to the diagnostic cloud platform 120 .

The remote diagnosis request and the pin configuration are both sent by the processor 114 to the diagnosis cloud platform 120 via the network module 115 in the form of a message (json format).

4. Remote access to the diagnostic interface provided by the diagnostic cloud platform enables users to perform diagnostic operations on the diagnostic interface.

5. Receive the diagnosis command (json format) from the diagnosis cloud platform 120 and send it to the vehicle.

After receiving the message in json format, it needs to be unpacked, and then the processor sends the data to the corresponding pin of vehicle diagnostic port 2 at the corresponding time interval according to the timestamp and pin information.

6. Receive feedback data from the vehicle and send it to the diagnosis cloud platform 120 .

When sending the feedback data to the diagnosis cloud platform 120, the processor 114 sends the data to the diagnosis cloud platform 120 in the form of a message (json format) through the network module 115, and the message has a header, a trailer, a timestamp and corresponding pins. information. The specific process is as follows:

The first IoV device 110 monitors the vehicle bus data in the mode of interruption and monitoring, and sends a packet when receiving the vehicle bus data. The packet mainly adds header, trailer, timestamp and pin information. The interruption and monitoring means that an interruption signal is sent when data appears on the vehicle bus. The first IoV device 110 performs data monitoring after receiving the interruption signal, and only performs read-only analysis on the data during data monitoring.

Between the header and the trailer is a complete data packet, which is used to confirm the packetization.

The diagnostic cloud platform 120 is configured to:

1. Receive a remote diagnosis request from the first IoV device 110, allocate a corresponding target diagnostic instrument from the diagnosis resource pool 120, and provide the first IoV device 110 with a diagnosis interface corresponding to the target diagnostic instrument.

In this embodiment, the diagnostic cloud platform 120 manages the status of the diagnostic instrument 3 in the diagnostic resource pool. If the load of the diagnostic instrument 3 exceeds a threshold, its status is busy, otherwise, its status is idle.

In this embodiment, the corresponding target diagnostic instrument is allocated from the diagnostic resource pool 120 through an allocation strategy, and the allocation strategy is as follows:

A. Determine whether the user has designated a diagnostic instrument according to the remote diagnosis request. If so, determine that the target diagnostic instrument is the one designated by the user, and allocate the target diagnostic instrument in an idle state from the diagnostic resource pool. If not, go to the next step.

B. Match the vehicle information with the database, determine the target diagnostic instrument as a diagnostic instrument with a high diagnostic success rate, and allocate the target diagnostic instrument in an idle state from the diagnostic resource pool. The database has vehicle information and the historical diagnosis success rate of the diagnostic instrument. In this way, a diagnostic instrument with a high diagnostic success rate can be found for the vehicle.

Preferably, in this embodiment, the diagnosis cloud platform 120 dynamically adjusts the target diagnostic instrument during the diagnosis process according to the adjustment strategy:

The status of the currently allocated target diagnostic instrument is detected in real time, and if the status is busy (the load exceeds the threshold), an idle target diagnostic instrument is reassigned.

The diagnosis cloud platform 120 can perform big data analysis according to the diagnosis data of each diagnosis, so as to optimize the above allocation strategy and adjustment strategy.

Through the allocation strategy and adjustment strategy of the present invention, the utilization rate of the diagnostic equipment is high, the idle rate is low, and the diagnostic resources can be utilized with maximum efficiency.

2. Receive the pin configuration (json format) from the first IoV device 110, and send it to the second IoV device 130 corresponding to the assigned target diagnostic instrument.

3. In response to the user's remote operation on the diagnostic interface, send a corresponding instruction (json format) to the second IoV device 130 corresponding to the assigned target diagnostic instrument.

4. Receive a diagnosis command (json format) from the second connected car device 130 and send it to the corresponding first connected car device 110 .

5. Receive the feedback data from the first IoV device 110 and send it to the corresponding second IoV device 130 .

The second IoV device 130 is configured to:

1. Receive the pin configuration (json format) from the diagnosis cloud platform 120, and map the pins of the communication interface according to the pin configuration. In this way, the mapping between the pins of the communication interface of the first IoV device 110 and the second IoV device 120 is completed, which is equivalent to the direct connection between the diagnostic instrument and the vehicle diagnostic port 2, which is the connection between the vehicle and the remote diagnostic instrument. Data interaction is ready.

2. Receive an instruction (json format) from the diagnostic cloud platform 120 and send it to the corresponding target diagnostic instrument.

After getting the message in json format, it needs to be unpacked by the processor to obtain the pin configuration or instruction.

3. Receive feedback data (json format) from the diagnostic cloud platform 120 and send it to the corresponding target diagnostic instrument.

After receiving the feedback data, it also needs to be unpacked, and then the processor sends the data to the corresponding pin of the target diagnostic instrument interface at the corresponding time interval through the corresponding bus channel and the corresponding pin of the communication interface according to the time stamp and pin information.

4. Receive the diagnostic command from the target diagnostic instrument and send it to the diagnostic cloud platform 120 .

When sending the diagnosis command to the diagnosis cloud platform 120, the processor sends the data to the diagnosis cloud platform 120 in the form of a message (json format) through the network module, and the message has a header, a trailer, a timestamp and corresponding pin information, For the specific process, please refer to the description of the first IoV device 120 sending feedback data to the diagnosis cloud platform 120 , which will not be repeated here.

In this embodiment, the communication interface adopts the DB15 interface, and the pin switching circuit is composed of relays, triodes or optocouplers connected between each pin of the communication interface and each bus channel. Referring to FIG. 3, the pin switching is realized by the instructions of the processor. , the bus channel is composed of corresponding transceivers, such as CAN bus channel is composed of CAN transceiver, bus channel includes CAN bus channel, LIN bus channel, K bus channel, UART bus channel, 485 bus channel, 232 bus channel and TTL bus Channels, etc., the network module adopts wired network module or wireless network module, and the wireless network module adopts wifi module, 4g module or 5g module, etc.

The display device is a display screen that comes with the Internet of Vehicles device, and the display screen is connected to the display module of the Internet of Vehicles device, or the display device is a terminal with a display function, such as a tablet computer, which is connected to the display module of the Internet of Vehicles device.

Taking a specific application scenario as an example, the first IoV device 110 is connected to the vehicle diagnostic port 2 of the commercial vehicle.

The first IoV device 110 determines that the pin configuration of the vehicle diagnostic port 2 is as follows:

CAN1: pin6-pin14, CAN2: pin3-pin11, K: pin15; Baud rate: CAN1-250K, CAN2-1M, K-10400bps.

The first IoV device 110 establishes communication with the vehicle according to the above-mentioned pin configuration.

The user sends a remote diagnosis request and pin configuration to the diagnosis cloud platform 120 through the first IoV device 110, and the diagnosis cloud platform 120 allocates the most suitable diagnosis instrument for diagnosis according to the remote diagnosis request, and provides a diagnosis interface corresponding to the diagnosis instrument for The user enters a diagnostic command.

The assigned diagnostic instrument switches the communication interface pins according to the pin configuration sent by the diagnostic cloud platform 120, and switches the CAN1 bus channel to pin6-pin14, the CAN2 bus channel to pin3-pin11, and the K line channel to pin15. The baud rate configuration of the bus takes effect, so that the two IoV devices complete the mapping of the physical interface.

However, those skilled in the art should realize that the above embodiments are only used to illustrate the present invention, not to limit the present invention. Variations and modifications of the examples will fall within the scope of the claims of the present invention.

Claims

A vehicle remote diagnosis system based on a cloud platform, which is characterized in that it includes a first IoV device connected to a vehicle diagnosis port, a diagnosis cloud platform, and a plurality of second IoV devices connected to a plurality of diagnostic instruments respectively, said A plurality of second IoV devices respectively connect the plurality of diagnostic instruments to the diagnostic cloud platform to form a diagnostic resource pool;

The first IoV device and the second IoV device have the same structure, and both include a communication interface, a bus circuit with a plurality of bus channels respectively used to transmit corresponding bus data, and used for switching the pins of the communication interface to different ones. The pin switching circuit, processor, network module and display module of the bus channel, the communication interface is connected with the pin switching circuit, the pin switching circuit is connected with the bus circuit, and the processor is connected with the pin switching circuit A circuit, a bus circuit, a network module, and a display module connected to a display device are connected, the communication interface of the first IoV device is connected to a vehicle diagnostic port, and the communication interface of the second IoV device is connected to a corresponding diagnostic instrument, The first IoV device and the second IoV device are respectively connected to the diagnostic cloud platform through their respective network modules.
The cloud platform-based vehicle remote diagnosis system according to claim 1, wherein the first IoV device is configured as:

Determine the pin configuration of the vehicle diagnostic port, and establish communication with the vehicle through the pin configuration;

sending a remote diagnosis request to the diagnosis cloud platform, where the remote diagnosis request has vehicle information;

sending the pin configuration to the diagnostic cloud platform;

Remote access to the diagnostic interface provided by the diagnostic cloud platform;

receiving a diagnostic command from the diagnostic cloud platform and sending it to the vehicle;

Receive feedback data from the vehicle and send it to the diagnostic cloud platform;

The diagnostic cloud platform is configured to:

Receive a remote diagnosis request from the first IoV device, allocate a corresponding target diagnostic instrument from the diagnostic resource pool, and provide the first IoV device with a diagnosis interface corresponding to the target diagnostic instrument;

Receive the pin configuration from the first IoV device, and send it to the second IoV device corresponding to the assigned target diagnostic instrument;

In response to the user's remote operation on the diagnostic interface, sending a corresponding instruction to the second connected vehicle device corresponding to the assigned target diagnostic instrument;

receiving a diagnostic command from the second IoV device, and sending it to the corresponding first IoV device;

Receive feedback data from the first IoV device, and send it to the corresponding second IoV device;

The second IoV device is configured to:

receiving the pin configuration from the diagnostic cloud platform, and mapping the pins of the communication interface according to the pin configuration;

receiving an instruction from the diagnostic cloud platform and sending it to the corresponding target diagnostic instrument;

Receive feedback data from the diagnostic cloud platform, and send it to the corresponding target diagnostic instrument;

Receive a diagnostic command from the target diagnostic instrument, and send it to the diagnostic cloud platform.
A vehicle remote diagnosis system based on a cloud platform according to claim 2, wherein the determining the pin configuration of the vehicle diagnosis port further comprises:

Controlling the pin switching circuit by the processor to sequentially select a pin of the communication interface;

Switch the current pin to each bus channel in turn, determine the pin configuration information of the vehicle diagnostic port corresponding to the current pin, maintain the connection between the current pin and the current bus channel and the baud rate after determination, and return to the previous step to select the communication the next pin of the interface;

The pin configuration includes the correspondence between the pins and the vehicle bus and the baud rate.
A vehicle remote diagnosis system based on a cloud platform according to claim 2 or 3, wherein the diagnosis cloud platform manages the status of the diagnostic instruments in the diagnostic resource pool, if the diagnostic instrument's status If the load exceeds the threshold, its status is busy, otherwise, its status is idle.
A vehicle remote diagnosis system based on a cloud platform according to claim 4, wherein the assigning a corresponding target diagnostic instrument from the diagnosis resource pool further comprises:

According to the remote diagnosis request, determine whether the user has designated a diagnostic instrument, if so, determine that the target diagnostic instrument is the one designated by the user, and allocate the target diagnostic instrument in an idle state from the diagnostic resource pool, if not, execute the next step;

Match the vehicle information with the database, determine that the target diagnostic instrument is a diagnostic instrument with a high diagnosis success rate, and allocate the target diagnostic instrument in an idle state from the diagnostic resource pool, and the database has vehicle information and the history of the diagnostic instrument successfully diagnosed rate correspondence.
A vehicle remote diagnosis system based on a cloud platform according to claim 5, wherein the diagnosis cloud platform dynamically adjusts the target diagnostic instrument during the diagnosis process:

The status of the currently allocated target diagnostic instrument is detected in real time, and if the status is busy, an idle target diagnostic instrument is reassigned.
A vehicle remote diagnosis system based on a cloud platform according to claim 6, wherein the communication interface adopts a DB15 interface.
A vehicle remote diagnosis system based on a cloud platform according to claim 7, wherein the bus channel comprises a CAN bus channel, a LIN bus channel, a K bus channel, a UART bus channel, a 485 bus channel, and a 232 bus channel and TTL bus channels.
The cloud platform-based vehicle remote diagnosis system according to claim 8, wherein the network module adopts a wired network module or a wireless network module, and the wireless network module adopts a wifi module, a 4g module or a 5g module.
A vehicle remote diagnosis system based on a cloud platform according to claim 9, wherein the display device is a display screen that comes with the vehicle networking device, and the display screen is connected to a display module of the vehicle networking device, or , the display device is a terminal with display function, and the terminal is connected with the display module of the Internet of Vehicles device.